Pump.



TED1 '-STATES JoHN Lf LATTA, or HIeKoRY, NORTH rcammina PUMP.

j 1,237,530. fi' To all whom t may concern.'y

Be it known-.that I, JOHN L. LA'rrA, a citizen of the United States, residing at tHickory, in the" county off Catawba and State'of North Carolina, haveinvented a.A

With the tor'egoing andother objectsin of which the follow- 4 viewfwhich will appear as the description thatchanges in the .sod

proceeds,I the invention resides in the combinatio'n and arrangement of parts and in the details of construction hereinafter dcscribed and claimed, it being understood precise embodiment of the invention herein disclosed can be made Within the scope oi what is claimed Without eparting from the spirit of the invention. 'i The invention -is illustrated in the accom- 'panying drawing, wherein Figure -1 is a vertical section of the pump, portions being broken away.

Fig. 2 is a sectionali'deta'il the pumpshowing in Fig. 1.

Thepresent construction generally resem` bles'that disclosed in the above mentioned application, and includes der or. barrel`14 providing and a cap 2 securedupon the upper end of the cylinder 'l 'and Vprovided with an upstanding head v3. The lower end of the cylinder is closed by a cap 4k provided with a central upstanding pin or stud 5, and with lof the head of parts behind those shown Water or liquid inlet apertures 64 surround4 A dislrvalve 7 is slidable ing the stud 5. upon .the `stud 5 to provide a check valve permitting of the inflow of liquid, butpref venting the outow of liquid apertures 6. `The upward movement of the valve 7islimited by a nut 8 or carried by thestud 5. When the valve 7 gravitates onto theeap 4, it covers the apertures 6, to prevent the escape of water or i. Specicaton of Letters Patent' v Application filed September 25, 1916. Serial N o. 122,107. I

, cate with the bore 9, and can sii-ed to discharge the atmosphere. Adepending tube 12has its a vertical cylin-v a water chamber,"

through the rat-enten Augier, i917.

other liquid from the cylinder through said apertures.

The head 3' is the lower end. of the bore 9'. A pressure Huid escape pipe or tube 11 has its lower end engagedwith the head 3 to communiwardly to any suitable point' where it is depressure fluid to the upper end engaged' with the ad municate with the lower end andprojects downwardly centrally within the recess 10, the lower end of the tube 12' providing a valve seat 13. .The pressure fluid, when the end of the tube 1 2 is un- -Z to comcovered, can ypass to the atmosphere from 75 the cylinder 1 by way of the tube 12, bore 9, and pipe 11. 1 1 v A 'vertical tubular housing 14'fhas its upper end projecting looselyr within the recess 10, around the is .secured or fitted end of the housing 14 and is sl'idable upon the tube 12. A coiled wire expansion spring. 16 surrounds` the `tube 1-2 and has its upper,

end secured to the collar 15, said spring 16 85 l .being-disposed within the housing 14 and being ofsuch a length, ing 14 is raised, the lower end of thespring 16 moves slightly above thevalve seat-13.

DisposerY an upper resilient buoyant ball .valve 17 seatah'le 'upwardly against the seat v13 to close the end of the tube l2, and the housing 1 4 is provided with air-apertures 18 therein adjacent thev endof the tube' 12, ori near the 95 upper end of the housing. -A second .resilient buoyant ball valve r2() isdisposed within the housing 14 below the valve 17, and ,said housing is provided with Water apertures 21 therein adjacent its The valve 20 is seatable upon an annular' valve seatV 19 engaged within the'lower end of the housing 14, andthe housing is movable 'vertically -or longitudinally of itself to lcontrol thedischarge `'of pressure fluid 1 05 from the cylinder.

. l lhe -valve 'seat19 depends from the housing 14 and 'is 'pr'.bvided with leather 'cupsr23 o i other suitable packingthereon to provide apiston 22 working snugly ing cylinder'f24iftl'1e'lower end of which-is attached 'to,.a""hor izontal" coupling 25 disprovided with ,au vertical bore 9 providing a pressure fluid outlet, and 60 said head has a counter bore or recess 10 at extend. up-

of the bore 9,

tube 12, and a collar 15 s0- snugly within the upper that when the housf l loosely within the housing 14 is A90 lower end.

in an upstandy movement of the-water.

' passa cludes a chamber or recess coupling 25.

cavity purpose,

essi AVAILABLE coP posed within the cylinder 1 near the lower end thereof. The coupling'25has a passage 26, one end of which 'communicates with the lower end of the cylinder 24, and the other end of which communicates with the lower end of a tube or pipe' 27 attached to the rl`he upper end'of the pipe 27 1s attached to the head 3 to communicate,I with a water or liquid discharge passage 28 thereof, and a discharge or eduction pipe 29 for the Water or other liquid is attached to the head 3 to communicate with the Ppassage 28, and can extend'to the point where it is desired to discharge the liquid when elevated. The head 3 is provided with a 31 for a check valve 30 to support the head or column oflwaten-in the pipe 29,' and to prevent the` downward or retrograde Any suitable check valve can be used for this purpose. The coupling 25 is provided with a ldepending boss 32 below thefcylinder 24 and housing 14, and said boss is providedwith an opening or aperture 33 extending therethroughand communicating with the lower end of" the cylinder 24. A cup 34 has its open end threadedly or otherwise engaged upon the4 boss 32', and the coupling 25 is provided with arestricted passage or duct having one end extending to th'e face of the boss 32 and communicating with the cup 34. .t tube 36 of small diameter extends upwardly through the cap or bottom 4 of the cyliiulcr 1 and has itslupper end threadedly or otherwise engaged with the con ling 25 'to communicate with the other en of the ve 35, a nut 37 or other retaining element lbeing threadedly or otherwise engaged upon the lower terminal of the tube 36 and bearing against the cap 4 to assist in holding the parts assembled. The piston 22 has a depending spider 38 to which a depending stem 39 is connected, said stem projecting loosely through the opening 33 and provided 2 with a disk valve 40 of rubber or other suitable material seatable upwardly against the boss 32 to close the respective end of the passage 35 when the housing 14 is raised. The passage 35 and tube 36 provide an eser relief conduit or passage establishing rumuiication between the well exteriorly le pump and the lower end of the cylinuci 4 when the valve 40 is unseated, as will hereinafter more fully appear.

fi he housing 14 is spring pressed or yieldaluy raised by spring tension and for this one or more coiled wire retractile springs 41 have their upper ends connected, as 42, to the head cap 2, and have their lower ends engaged with hooks 43 carried by the housing 14. The springs 41 serve to raise the housing when the -pressure within the cylinder 1 is relieved.

The air or pressure fluid inlet means in- 44 provided in the upper end of the head 3, and apassage 45 prov1ded 1n said head and communicating at one end with its bottom, the other end of the passage 45 communicating with the lower end of a pressure fluid supply pipe 46 attached to the head 3. A cap 47 is seated on the head! 3,

being secured thereto diaphragm 49 is clamped between the cap and headB to extend across .the chamber 44. A passage 50.in the head 3 establishes com-' munication between thelchamber 44 and upper end of the ',fylinder 1, and a ball valve 51 is seatable on the bottom of the chamber 44 over the rend of the passage 45, but there can be a slight leakage of air past the valve 51 when it is seated. A dished disk 52 is secured centrally tothe under surface of the diaphragm 49 to bear upon the valve 51 and to hold 'itin place adjacent to the passage 45, and a bearing disk.53.is preferably secured upon the upper surface of the diaphragm to receive .the pressure of a coiled wire expansion spring 54 confined between the disk 53 and top of the cap 47. The spring 54 is of theproper tension to depress the diaphragm 49 whereby to seat the valve 51 when the pressure in the cylinder 1 is relieved.

In operationfthe cylinder 1 is submerged in water or other` liquid which is to be elevated, and when the pressure within the cyl inder is relieved, the water will flow by gravity through the apertures 6 into the cylinder, the check-valve 7 seating over said apertures to prevent the escape of water therethrough. Before the cylinderI 1 is filled with water, the'valves 20-17 gravitate within the housingA 14, and as the cylinder becomes filled with water, the water will lill the housing 14, and will float the valves and seated against' the lower end of the tube 12,

the chamber 44 centrally of by means of bolts 45, or other, securing elements, and a flexible'" thereby preventing the further escape of air 11G Jfrom the cylinder by way of the tube 12, bore 9 'and pipe 11 which communicate with the atmosphere. During the time that the valve 17 is unseated, the pressure within the cylinder 1 is relieved, being exhausted to the 115 atmosphere, and this will relieve the pressure in the chamber 44, so thatV the spring` 54 depresses the diaphragm 49 and holds the valve 51 seated. There is, however, a slight leakage of pressure iiuid past the valve 51 12e ,so thit'the air flows from the chamber` 44 through the passage Ointo. the cylinder 1 and thence to the atmosphere by way of the tube 12. This leakage of pressure fluid or air is only slight, so as to eliminate waste,

of air, during the time that the cylinder is being refilled. Now, assume that the cylinder 1 is lilled with water', with the valve 17 seated against the tube 12, to prevent the escape of pressure iiuid, the housing 14 being 130 water in the housing valve 17 can seat without interference.

meuse t e spring 54, thus permitting the valve 51 to ,berorced from its seat bythe pressure flu'th-J whereby the pressure fluid can now owfiniinterruptedly into the cylinder by way of the chamber 44 and passage 50. The 'pressure fluid willwfrce-"thewwater down- Wardly" within the cylinder end ofsaid hoiisii'ig,'and thence through the valve seat 19 in'to the cylinder 24,. From the cylinder 24, the water is forced through -the passage 26, pipe 27, passage 28, and pipe 29 to the point of discharge, the water being displaced by lthe pressure fluid andbeing elevated thereby. The valve 17 is held seated by the pressure, during the meantime. When the water isdisch'aiged to thelevel of the apertures 21, the discharge of water from the cylinderor tank'l is arrested. During the time thatthe water is being ejected from the cylinder, the valve 20 will move downwardly with the level of the 14, so that when the 'water level reaches the seat 19, the valve 20 will seat thereon, thereby preventing the further escape ofwater or the escape oi pressure fluid through the watei` outlet conduit. Consequently, cylinder will foi-cc the piston 22 downwardly with the housing 1.4- in the cylinder 24, and the housing 14 being moved downwardly, will move the upper end of the expansion spring 16 downwardly, thereby bringing said spring 16 under compression upon the valve 17. 'lhc spring'16 when thus compressed tends to force-the valve 17 from its seat. ing 14 is moved downwardly, the stem 39 being moved downwardly by the housing, will unseat the valve 40, thereby bringing the reliefpassage 35 into communication with the lower end ol the-cylinder 24. The water within the cylinder 24, below the -pis ton 22-can therefore be readily expelled from the pump by way of the opening 33, cup '34, passage 35 and tube 36. This will 4immediately relieve the pressure below the piston 22, whereby the pressure within the cylinder 1 will force the piston 22 and housing 14; downwardly by a -quick motion, thereby bringing the spring 1b under quick coinpression. The spring 16, instead ol" being compressed gradually, isthusbrought under quick compression, and the tension is sufficient to force the valve 17 downwardly -range ot' the through the -fl apertures 21 of the housing 14 into the lower the pressure in the `fluid or air to the Furthermore, when the housl t tween the pressure lliiid supply from its seat by a quick or sharpv'movement, thus throri'ing the valve r17 beyond the rush of ypressure fiiiid from the cylinder through the tube 12. Thispreventsl the rushof pressure-fluid to the at iiiosphere by way 'of the tube 12 from suele 16 aS above devout of the range of the air suction. The action'of the spring 16 4is greatly enhanced by the downward movement of the housing l-'l caused by the relief ofthe water'pressiire below the piston 22 in the cylinder 24. The

kvalve 17 being unseated at once relieves the since the pressure pressure in the cylinder,

.ii.l ,l caii now flow way oiwtlitube 12, At the moment that from itsseat, so that there is a reduction ink pressure in the cyl iiidcr, this reduction also extends into -to the atmosphere by pressure against the diaphragm so that spring 5:1- seats valve 51. There is, a slight leakage of pressure fluid past the valve 51, when it' is seated as above stated. There is only a slight flow 0f pres' sure fluid when the cylinder is being re` filled. rlhis prevents a also facilitates the operation of the pump, since the water can flow into the cylinder 1 by way of the apertures 6 quickly to again fill said cylinder for a new operation. As soon as the valve 17fhas been unseated and thc pressure relieved, the housing 14 is again raised under the' influence of" its springs '11, whereby to seat the valve 40. rllien when the valve 17 is brought against ing the valve 17 back against its scat, since the action of the spring scribed will eonipletely throw the valve 17 passage and-pipe 11. the valve 17'is thro-wn.

the secondary chamber 44,430 lessen the upward wastage of air, and l its seat 125, to shut ofll the flow oi pressure atmosphere, the cylinder with water, the pressure is again brought to bear in the cylinder 1 as above indicated. 'l'he operation isi'epeated the same as before, and the operation rcpeated intermittently as long as the pressure fluid is turned on.

Attention is directed to the fact that the valve l'is operated by the i pressure, whereby when the pressure within the cylinder 1 is relieved, the valve 51 is operated to4 reduce thelow of air to the cylinder, wheras when the valve 17 isfscated to again 4cause the accumulation of pressure, the valve'l is returned to normal position to againestablish full communication bepassage and 1 having been filled cylinder 1.

IlO

variations in Haying th'iis'describcd the invention', what is claimed as new is:

1. vAlpun'ip embodying a chamber having a liquid inlet,

a lpressure fluid inlet, a fpressure fluid outlet and a liquid outlet, the liquid outlet including a cylinder, a piston for the cylinder, a va ve seatablefagainst the I piston for closing the liquid outlet when the l is moved by liquid level is lowered a `predetermined amount, a valve for the pressure fluid out; let, spring means ,for throwing the pressure fluid outlet 'valve open when said-piston and a passage communicating VAwith said cylinder and the atmosphere, and a-valve for closing said passage and operated by the piston to move open when t e piston starts 1g to move to instantly relieve pressure in the cylinder.

2. A pump embodying a chamber having a liquid inlet and outlet and a pressure fluit inlet and outlet, the liquid outlet includingr a cylinder,apistoii working in said cylinder,

a valve coperable with VSaid piston for closing the liquid outlet when the liquid level lowers a predetermined amount in said chamber, a valve for closing the pressure 2g luid outlet, means operated by the piston for unseating the second mentioned valve when the piston is moved by pressure fluid in said chamber, a relief passage having one end extending away from and' communicating with said cylinder and its other end leading to the exterior of the ump, and a valve for normally closing thefirst-mentioned end of said relief Vlissage and moved to open position away rom said passage when said gg piston is moved.

3. A pump embodying a chamber having a liquid inlet, a pressure fluid inlet and outlet, a member having a liquid outlet and a 'cylinder communicating therewith, a piston working in said cylinder, a valvecoperable with Said piston to close the liquid outlet when theliquid level lowers a predetermined amount, a valve for closing the pressure fluid outlet, means for iinseating the second 4g mentioned valve when the pistonis moved, said member having a relief passage having one end extending away from and coininunicating with the cylinder and its other end leading lo the exterior of the pump, and a valve connected to the piston for normally closing the first-mentioned end of said passage and moved to open position when said piston is moved by the pressure iiuid iii the chamber.

4. A pump embodying a chamber having a liquid inlet, a pressure fluid inlet and outlet, a member having a liquid outlet and a cylinder communicating therewith, a piston working in said cylinder. a valve copei'able with said piston to close the liquid outlet when the liquid level lowers a prede- 4tei'mincd amount, a valve for closing the pressure fluid outlet. means for unseating the second mentioned valve when the piston sa is'moved, said member having a boss, an opening extending through said boss, and a relief passage extending to the face of the boss and communicating with therexterior of the pumpa cup engaged upon said boss,

a stem connected to the piston and projectpressure within said chamber,A

' diaphragm to ing4 through said opening, and a valve carried by said stem seatable against said com to close said opening and passage.v

.l pump embodying a chamber having a liquid'inlet and outlet and a pressure'l'luid inlet and outlet, means Jfor stopping the outlet of pressure fluid and liquid, a valve controlling the inlet of pressure fluid and allowing leakage when closed, and means communicating with said chamber and pressine fluid inlet for causing the valve to move to open position upon the accumulation of L pressure in said closed position when the pressure in said. chamber is relieved.

tl. A pump having a chamber, a liquid inlet and outlet for said chamber, and a pressure fluid outlet and pressure fluid supply 'means for said chamber, means for stopping the outlet of the pressure fluid and liquid, a valve for shutting oil the flow of pressure fluid into said chamber and allowing leakage when closed, and means tending to close said-valve upon the reduction of pressure and adapted to be moved upon the accumulation ol pressure to permit said valve to open. T. pump having a chamber, a-liquid inlet and outlet forsaid chamber, and a pressure fluid inlet and outlet for said chamber, means for stopping the outlet of pressure luid and liquid, a valve seatable toward the pressure flu id inlet lor shutting olf the flow of pressure fluid into said chamber and als lou ing leakage ywhen closed,

chamber to release the valve.

S. A pump having a chamber, a liquid inlet and outlet for said chamber, and a pressure fluid inlet and outlet for said chamber, means for stopping the outlet `of pressure fluid'a'nd liquid, and means for reducing but not stopping the How of pressure fluid iiito said chamber from the inlet including a b'ring said means into operation upon a reduction of pressure in said chamber aiid to bring said means out ol operation upon the accumulation of pressure in said chamber.

9. A pump having a chamber, a liquid inlet and 'outlet for-said chamber, and apressure lluid inlet and 4outlet for said chamber, means for stopping the outlet of'pressure fluidfand liquid, a valve for reducing the flow ol pressure fluid from the inlet into said chamber and allowing leakage when closed, and a diaphragm subjected to the pressure in said chamber for moving said valve t`o closed position upon the reduction I of pressure -in said cha ber and to permit said valve toop'cii upon the accumulation of pressure iii-said chamber.l f

l0. A pump having a liquid chamber, a secondary chamber communicating therechamber and to move to.

and 'spring' means tending to seat said valve and oper-' ated by the accumulation of pressure in-said' ico with, a liquid inlet and outletfortheliquid' chamber, a pressure Vfluid outlet for the liquid chamber, and a pressure fluid inlet communicating withl the secondary chamber, means for stopping the outlet of liquid and pressure iiu1d, a valve Within the secondary chamber to reduce the flow of pressure fluid into said'- chamber and' allowing leakage' fber, means for stopping the outlet of liquid and pressure fluid, a valve Within the secondary chamber to reduce the flow of pressure fluid into said chamber and allowing leakage when closed,`and a diaphragm extending across the secondary chamber to move said valve toward closed position upon the reduction of pre'urefinsaid chamber.

12'. A pump having a liquid chamber, a, secondary chamber, a liquid inlet andoutlet for the liquid chamber, a, pressure fluid outlet for the liquid chamber, anda pressure fluid inlet communicatin with the secondg; ary chamber, said secon ary chamber col-J municating with the liquid chamber, a. diaphragm extending yacross' the secondary chamber, a cap clamping said diaphragm in place, yspring means .between the cap 4and diaphragm to move the "diaphragmtoward Vthe pressure fluid-inlet, Ia vvalve Within the seconda rychamber moved bythe diaphragm toward the pressure fluidinlet to reduce the outlet of pressure fluid and liquid rom the 1 liquid chamber.

In testimony that I claim the foregoing as my own, I have hereto aihned my signa'- ture in the presence of two jvltnesses. A, l

' v JOHN L. LATTA.

Witnesses: A

H. Af- Lem; R. R. WAGNER.

lflow f i pressure Huid and allowing 'leakl age when closed, and means for stop ing the 

